why sap implemented lock concept seperatly as db
locks(Oracle) are already there?
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Answer Posted / rajesh chowdary pendyala
A "SAP lock" is named "enqueue lock", the enqueue is on a
much higher level, e. g. a complete sales document is locked
there whereas in the datbase usually only row locks exist.
Since SAP runs on more database than Oracle one needed to
have a mechanism, that is database independent and on a
higher level. sap locks can be viewed in sm12 and db locks
we can view in db01.
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